2,3,8,9-Tetrahydro-5-phenyl-9-(phenylmethylene)-5H,6H-thiazolo[3,2-a]thiopyrano[4,3-d]pyrimidine 、
顺丁烯二酸 在
乙腈 作用下,
以
甲醇 为溶剂,
以gives 3.0 g (77%) of cream colored product, m.p. 143°-145°的产率得到2,3,8,9-Tetrahydro-5-phenyl-9-(phenylmethylene)-5H,6H-thiazolo[3,2-a]thiopyrano[4,3-d]pyrimidine, maleate salt